Mitchell returns to pitch in his home state for the first time as a professional. A native of Houston Texas, Mitchell was selected by the Houston Astros in the 20th round of the 2005 MLB Amateur Draft after a four-year high school career at Magnolia (TX) High School. The 6’5” 235 pound right-hander spent two years in the Astros farm system pitching for Greeneville of the Appalachian League, in 2005 and 2006. Released by the Astros following the 2006 season, Mitchell signed with Worcester in 2007 where he spent the better part of three seasons pitching for the Tornadoes before finishing the 2009 campaign with the Southern Illinois Miners of the Frontier League.

In 55 career games, the 22 year-old Mitchell has compiled a 13-12 record striking out 142 batters and issuing just 56 free passes with a 4.02 earned run average, in 197 innings of work. The high school draftee has spent the majority of his professional career as a starter and expected to join the likes of Ralph Roberts, Taylor Allen, and Richard Jessup in the Dillas starting rotation.